Scholar's Cultivation System Panel

Although the entire competition lasted for three days, the actual rest time was not even ten hours for each person on average. In addition, Xu Yun and the others were three rough men, and they basically didn't bring any change of clothes.

The new dormitory school has prepared mattresses and pillows in advance, so it can be said that it is no problem to come empty-handed.

After Xu Yun and his teammates arrived, they went back to the dormitory after having dinner together in the evening and went to bed early to replenish their energy.

On September 9, 2016, the Higher Education Society Cup Mathematical Contest in Modeling began.

At 7:30 in the morning, the special computer room prepared by the school was already filled with more than a dozen participating teams.

Everyone was full of energy and calmly waiting for the topic to be released on the official website.

Professor He had already introduced the various rules in detail, and left immediately after sending them here yesterday.

Obviously, they have great trust in Xu Yun and their regular army.

As for the other teachers who led the team, they went to the computer room in the morning to say a few words of concern, and then left quickly.

Seeing that it was getting closer and closer to eight o'clock, the entire computer room was filled with a tense atmosphere, and no one was in the mood to chat at this time.

His eyes were firmly locked on time.

As soon as the countdown started, everyone couldn't wait to enter the official website and download the topic of this session.

According to the rules, there are four major questions in each competition. The first two are undergraduate group questions, and the last two are specialist group questions. The participating teams need to choose one of them as the goal, and complete the modeling and programming within 72 hours. , and papers in the corresponding format.

Often considering the time constraints and heavy tasks, participating teams will not waste too much time on topic selection.

You must quickly identify topics that are suitable for your group.

This is also a test for the captain. If you choose the wrong topic, it will definitely make the next process extremely difficult.

However, the moment they saw the title, their expressions instantly froze on their faces.

I just feel a little dazed in my head, and the situation is beyond expectation.

"Problem A Design of mooring system."

"The impact of the opening of the community in question B on road traffic."

After regaining consciousness, the computer room immediately became lively, and the voice of complaining was endless.

"This year's question is a bit abnormal. One involves mechanics and the other requires hierarchical analysis."

"It's over, we don't have anyone from the zoo in our team."

"Which question should I choose?"

"I feel that all the questions are very difficult. I knew that I should study more questions involving mechanics."

"Suddenly regret not going to Academician Xu's open class."

...

Of course, there are also high-quality teams that quickly adjust their mentality and analyze and choose the two questions.

For example, Zhou Qi's Zhang Xiaoyuan team.

"The design of the mooring system involves mechanical models, Zhou Qi, how well do you master this aspect?"

"I'm weak in college physics, I'm afraid it will be difficult to do well." Zhou Qi answered Zhang Xiaoyuan's question truthfully.

After all, he doesn't have Xu Yun's perverted learning speed. He may have mastered mathematics courses well, but college physics really can't guarantee it and can't guarantee it.

After all, this concerns everyone in the entire group. If you can't seek truth from facts, you will be causing trouble for everyone.

After receiving Zhou Qi's affirmative answer, Zhang Xiaoyuan frowned slightly, and immediately made a decision.

"We choose question B."

"Yes, I have no objection." Liu Xinning, who was in charge of programming, expressed his opinion.

After determining the goal, Zhou Qi didn't hesitate any longer, and immediately began to study the specific issues of the impact of the community's open road traffic, trying to calculate and model.

On the other hand, Xu Yun was very calm.

Both Zhu Liyan and Zheng Yuchao are from the School of Engineering and Design, and they only need to be responsible for the intermediate programming problems, so basically they can't help Xu Yun much in terms of mathematical modeling, so Xu Yun can decide which problem to choose.

"team leader."

"Which question shall we choose?"

Following Zhu Liyan's first question, Xu Yun gave the answer without any hesitation.

"I have learned a lot about physical mechanics, and I have also listened to Xu Chongxing's open class on mechanics, so we chose the design of the mooring system."

In this semester, apart from taking mathematics courses, he also did not fall behind in physics.

Sometimes I would go to Xu Chongxing's public lectures.

Although question A seems to involve mechanics, and the amount of calculation is relatively large, he is still relatively confident.

On the contrary, the impact of community opening on road traffic requires hierarchical analysis and fuzzy comprehensive evaluation, which may not be very easy when modeling.

Neither Zhu Liyan nor Zheng Yuchao will doubt Xu Yun's decision.

After selecting the target, they all expressed their opinions one after another.

"Then the initial modeling will be handed over to you. I'm afraid the two of us can't help much with the mechanical model."

"But we can guarantee the logistics first."

Xu Yun knew that he needed to take on the task of modeling in the first stage of the competition, and in order to buy enough time for the two of them, he also needed to complete the modeling as quickly as possible.

Then continue to cooperate with the programming of the two of them to complete the thesis.

These divisions of labor were established at the very beginning, Xu Yun didn't worry too much, and nodded his head directly to reassure Zhu Liyan and the others.

"Don't worry, I will complete the modeling as soon as possible."

Immediately immerse yourself in the topic after speaking, study the data given in the topic and the questions raised.

"The transmission node of the near-shallow sea observation network consists of a buoy system, a mooring system and an underwater acoustic communication system."

"The buoy system of a transmission node can be simplified as..."

...

"Calculate the inclination angles of the steel drum and each steel pipe section when the sea surface wind speed is 12m/s and 24m/s, and the shape of the anchor chain..."

"Under the above problem assumptions, the calculated sea surface wind speed is..."

"Please give the mooring system design considering wind force, current force and water depth..."

Xu Yun studied the complete topic and knew that the first two questions should be added on purpose to help participating students understand the problem and form ideas for modeling and solving.

The model is established by using the knowledge of mechanics, and the required results are given after solving.

Determine the model length of the anchor chain and the mass of the weight ball.

Make the draft of the buoy and the angle of inclination of the swimming area and the steel drum as small as possible.

"Build a model and solve it through force analysis."

"Simplify the anchor chain steel barrel and steel pipe into soft ropes, and use the three-segment catenary to hang heavy objects to solve the problem."

"The lower anchor chain is simplified as a catenary, and the upper steel pipe and steel barrel are treated as rigid bodies, and the model is established by the balance conditions of force and moment."

"Further, each link chain and steel drum steel tube is regarded as a rigid body, and the force and moment balance conditions are obtained, and a discrete recurrence model is given."

With fast and active thinking, Xu Yun quickly understood the idea of ​​solving the problem and modeling in his mind. After finding the right direction, he did not delay any further, and immediately started the derivation of the first step of the catenary equation.

This question involves a lot of data, and the amount of calculation is also very large. Under the effect of concentration, Xu Yun is completely immersed in the answer.

Relying on its greatly improved ability to speed up the calculation process, the entire problem solving and modeling can only be said to be silky smooth.

Didn't encounter any stuck situations in the middle.

On the other hand, the other participating teams in the computer room did not go so smoothly. No matter which question they chose, they all showed embarrassment. The progress was very slow and they could only watch the time go by.

Everyone knows that the shorter the time spent on modeling in the early stage, the more conducive to the subsequent programming and papers of teammates.

However, if you want to kill a thief, you won't be able to recover.

You can only slowly improve the model like an ant crawling.

And if you want to say who is the most relaxed in the computer room all morning, it must belong to Zhu Liyan and Zheng Yuchao.

Originally, they wanted to help Xu Yun a little bit so that he could complete the modeling more easily, but they found that there was no chance for the two of them to intervene at all. They thought that instead of helping Xu Yun at that time, they should honestly act as a logistics role first Better.

Food and drink all day long.

This level of relaxation is in sharp contrast to other personnel in the computer room.

If outsiders saw it, they would probably think that the two of them were not contestants at all.

At night, Xu Yun used all the remaining hours of deep sleep to revive himself with full blood. After the modeling was completed, he provided suggestions and optimization plans for Zhu Liyan and Zheng Yuchao's programming. In addition, he had to complete the corresponding thesis. Said that he himself was one person and carried out all the division of labor among the three people.

Rao Zhu Liyan and Zheng Yuchao regarded Xu Yun as their idols, and they had to admire this situation from the bottom of their hearts.

As expected of a boss who can stay up for three days and three nights, their mentality is simply incomparable.

Xu Yun and his teammates have been training for such a long summer vacation, and they must have put in so much effort to go to the national award. It is really a pity for this effort not to win the Higher Education Society Cup.

What's more, Professor Tang and Dean Qin also have such high expectations for him, so they must do their best.

For this reason, in the process of programming and writing papers, Xu Yun and the others are also continuously optimizing the answers to each link.

Strive to be the most perfect.

Anyway, the Higher Education Society Cup Mathematical Contest in Modeling is not about time, as long as it is uploaded within the specified time.

Xu Yun and the others had no intention of handing in the papers in advance, so even if they deliberately slowed down the progress, they would not worry at all.

Compared with Xu Yun's team deliberately slowing down to strive for perfection, most of the other teams are speeding up, for fear that it will be time to program or the paper has not yet been written.

Xu Yun has experience in writing papers, and he has participated in modeling and programming, so it is not too slow to proceed.

Time is a very strange concept. When you want it to pass quickly, it often feels like years. On the contrary, when you want time to slow down, it will pass quickly.

All the contestants were highly concentrated and completed their respective tasks intensively. Before they knew it, they came to the third day of the competition.

Last night Xu Yun stayed up all night after considering that there was no time for deep sleep.

There are still about ten hours before the end of the competition. Although the thesis is drawing to a close, his energy has begun to become listless, and his upper and lower eyelids are fighting more and more frequently.

Zhu Liyan and Zheng Yuchao were out of work for the time being. Although they did not return to the dormitory to sleep, they stayed up all night and lasted until the third night, and they were already too sleepy to fall asleep on the table.

"The thesis is still a bit short, but it's too late to go to bed and wait for the morning to write, so I have to think of other ways."

"correct."

Analyzing his current situation, Xu Yun quickly thought of the potion of energy he had drawn earlier, and his eyes immediately brightened.